Introduction Galvanized Steel Sheet is defined as a carbon steel sheet coated with zinc on both sides. Galvanized Steel Coil produce galvanized steel with two main processes: continuous hot dip galvanizing and electrogalvanizing.
The hot dip process includes passing the steel through a molten zinc bath, and the electrogalvanizing process includes applying zinc through electrolytic treatment. As a result, the zinc layer is firmly adhered to the base metal through the iron-zinc bonding layer. Our hot-dip galvanized products are manufactured in accordance with specifications, and our electro-galvanized products comply with the specifications.
Galvanizing is one of the most effective and economical methods for protecting bare steel from corrosive environments. Zinc is not only a barrier between steel and the environment, but also sacrifices itself to protect the steel plate below. When two different metals are in contact and coupled with water and oxygen, sacrifice or current protection occurs. Zinc preferentially corrodes iron in steel. This protection prevents corrosion of the steel in areas not covered by zinc. Therefore, the diffusion of corrosion from cutting edges, drilling holes, etc. is minimized.
Technical Data | Standard | AISI,ASTM,GB,JIS | Material | SGCC,S350GD+Z,S550GD+Z,DX51D,DX52D,DX53D |
| Thickness | 0.16-1.2mm | Width | 600-1250mm |
| Tolerance | "+/-0.02mm | Zinc coating | 60-275g/m2 |
| Coil ID | 508-610MM | Coil Weight | 3-8 tons |
| Technique | Hot rolled, cold rolled | Package | seaworthy package |
| Certification | ISO 9001-2008,SGS,CE,BV | MOQ | 25 TONS (in one 20ft FCL) |
| Delivery | 15-20 days | Monthly Output | 10000 tons |
| Surface treatment: | oiled, passivation or chromium-free passivation, passivation+oiled, chromium-free passivation+oiled, resistant to fingerprints or chromium-free resistant to fingerprints | ||
| Spangle | regular spangle,minimal spangle, zero spangle,big spangle | ||
| Payment | 30%T/T in advanced+70% balanced;irrevocable L/C at sight | ||
| Remarks | Insurance is all risks and accept the third party test | ||
| Mechanical properties of galvanized steel | |||
| Usage | Grade | Yield strength(MPa) | Tensile strength(MPa) |
| Punching galvnaized steel | DC51D+Z | - | 270-500 |
| DC52D+Z | 140-300 | 270-420 | |
| DC53D+Z | 140-260 | 270-380 | |
| Structure galvanized steel | S280GD+Z | ≥280 | ≥360 |
| S350GD+Z | ≥350 | ≥420 | |
| S550GD+Z | ≥550 | ≥560 | |
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